Type-writing machine.



W. V, PETERSON. TYPE WRITING MACHINE.

APPLICATION FILED MAY 5, 1905.

\A/ITNEEEEE. 7% ZQZ N f 1-415 A TTEIFQNEY UNITED STATES PATENT OFFICE.

WILLIAM VICTOR PETERSON, OF MINNEAPOLIS, MINNESOTA, ASSIG rNOR TO WYOKOFF, SEAMANSdc BENEDICT, OF ILION, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

' Patented. Jan. 14, 1908.

Application filed May 5. 1905- Serial No. 258.931.

in the carriage is released at any point in its leftward traverse from the control of its escapement mechanism, is quickly advanced and is automatically arrested at a predetermined point or points.

Machines of the class referred to are 'rovided with one or more stops on the carriage which are adapted to co-act with one or more stops on the framework of the machine. When the carriage stop strikes the stop on the machine frame. the carriage sometimes rebounds and would be liable, if permitted .to reengage with the escapement mechanism during such rebound, to stop at a wrong position.

The main object of my invention is tocure this defect, and I do this by providing means for preventing rebound when the stops coact, said means consisting preferably of an independent catch or stop which is associated with the usual carriage stop.

To the above and other ends the invention consists in certain features of construction and combinations of devices hereinafter fully described and particularly pointed out in the claims.

In theaccompanying drawings, Figure 1 is a side elevation of so much of a type-writing machine and its tabul-ating mechanism as is necessary to illustrate my invention; Fig. 2 is an enlarged top plan View of the series of denominational stops mounted on the niachine frame and of a portion of the stop rackbar on the carriage, a column'stop and its associated back stop or anti-rebound stop being shown mountedon said rack bar;

Fig. 3 is an enlarged perspective view of an anti-rebound stop: and Fig. 4 is an enlarged perspective view of amodified form of antirebound stop. 5

I have shown my invention as ap liedto a No. 6 Remington typewriter an to the tabulating. mechanism usually associated wit h that machine, but it is to be understood that theinvention may lie-adapted to other forms and styles of writing machines and tabulators.

In the drawings, 1 designates the base of the machine, 2 corner-posts and 3a top plate surmountingthe latter. The pa e r carriage 4 is provided with wheels or rol ers 5 which travel on parallel guide rails 6. V A spring- -dru1n (not shown) 'is connected'with the paper carriage and constantly tends to move 1t towards the left, this movement bein'g controlled during the course of the writing by an escapement mechanism comprising a feed rack 7, mounted on spring-pressed arms 8 which are pivoted at 9 on the (paper carriage, a pinion 10 with which sai rack normally meshes, an escapement wheelll 0peratively connected with said pinion, and

key controlled escapement dog's v (not shown) which are, adapted to alternately'engage the teeth of said-escapement wheel and give to the carriage a step-by-stepfeed movement leftward across the top plate as long. as the feed rack 7 and pinion 10 are in engagement.

Extending rearwardly from the carriage 4 are arms '12, one of which only is shown, said arms supporting a column-stop rack-bar 13 which is toothed or-notched on opposite sides to receive one or more bifurcated column stops 14, said stops being removable and adjustable to different positions on said rack bar, the latter being graduated to correspond to the usual carriage scale. A 'series of denominationalstops 15 areslidably arranged in a frame or housing 16 supported by a bracket 17 secured to the base 1 and extending upwardly in rearof the rack bar 13 .with the stops 14 whereon the slidable denominationa stops 15 are adapted to 006pcrate- Each denominational stop 15 isconnected by a pin and slot connection with a vertically disposed lever 18 ivoted at 19 in the bracket 17 and connecte at its lower end to a horizontal ush rod 20, arranged beneath the base of the machine. Each push rod 20 is provided with a restoring spring 21 and-terminates at its forward end in a key button 22. g

Each of the denominational stops 15 is formed with a shoulder 23 which is adapted to co-act-with a universal bar 24 supported by arms 25 pivoted at 26 on the bracket 17.

.The arms 25- are connected to a rocker arm' 27 which, by a link 28, is connected with a lever 29 pivoted at 30 in a bracketSl-on the- 'top;plate The'fozpward or free endof the lever 29 carries a shoe piece or lifter 32 which is adapted to swing the feed rack 7 upwardly about its pivots 9 when the rearend of the lever 29 is 'ulled down, as'occurs when any one of the enominational stops is'moved 'forwardlyin a known manner. When thus v freed from the control of its escapement or letter space feed 'mechanisni, the carriage will move forwardly across the top plate under the influence of the spring drum until the firstcolumn stop 14 at the right of the pro jected denominational stop 15 contacts with the latter. If at thestart' the distance between the co acting stops is sufficiently great to allow thecarria e during its movement to acquire considerabe momentum, it is liable to rebound when the columnstop strikes the denominational stop; and should the es capement rack 7 be ermitted to rengage with the pinion 10 be ore the carriage or column stop again contacts with the denominational stop after, the rebound, the carriage .will be arrested one or more lette'rspace-distances to the right of the pro erpoint.

To obviate the defect just escribed I rovide means for preventing the rebound o the carriage, said means, as'herein shown, being- I in the form of an anti-rebound or looking stop designated as a whole bythe reference 33, as best shown in Fig. 3 of the drawings. The anti-rebound or locking stop prises a bifurcated plate-like portion 34, the arms 35 whereof aredesigned toengage with the notches or teeth of the rack bar 13, and a sto portion or spring arm 36 extending latera ly of the portion 34 and suitably con-' nected therewith, as by a rivet 37. I do not, however, desire to be limited to the particular construction of anti-reboiindstop just described as other constructions of stop may be employed within the scope of my invention. One such is illustrated in Fig. 4, the stop 38 33 is preferabliy placedupon the rackbar to therein shown being composed of one piece, the bifurcated portion 39 and the sto portion 40 being-formed from a single p ate of metal. j T,

The anti-rebound: stop 33 is adjustably mounted upon the rack bar 13 and is removable therefrom in a manner similar to the col: umn stop 14 with which it is associated, but of which it'is entirely independent. The stop the left of an at such stance from a col: umn stop that the free endof the stop portion 36 of the anti-rebound stop is far enough 'from the adjacent face of the column stop 14 to afford sufficient space for the entrance be.- tween them of the beveled forward end of. the projected denominational stop 15, as, best appears in Fig-F2.

ex lained.

he column stop 14 is shown in Fig. 2 as being engaged with-the rack'bar'13 at the point 48 on the rack bar scale, and the 33 com.

he operation of theinvention will-now be anti-rebound stop or back stop 33 is shownengaged with the rack bar at the point 38 or ten spaces to the left of its associated column stop. Of course the point at which the stop 33 is placed will depend upon the length 0 ofits stop portion 36'and may be at a less or greater distance from its associated column stop than that specified. Suppose for the sake of illustration, that the carriage be positioned at apoint corresponding to 25 Or 30 on the rack bar scale, and that h l so positioned the finger button 22 of the fourth denominational stop 15 be pressed in! The motion imparted'to the finger button or key 22 will be transmitted through the push g rod 20 and lever 18 to the fourth denominational stop -15 which will-be projected or slid forward as indicated in Fig. 2. The shoulder 23 of said denominational stop will, in its forward movement, press against the universal 35 bar 24, swinging said universal bar forwardly f about the pivot 26 and depressing the arm 27 "which, through the'link 28, exerts a downward pull on the rearward arm of the lever 29 and causes the lifter 32 on the forward end of said lever to swing the carriage rack 7 up wa'rdly about the pinion 10. -As soon as the carriage rack is disconnected from its pinion the spring drum will draw the carriage leftathering momentumas it 5 pressed forward, it'having suflicient spring or give topermit of such forward. movement, and will at the'same time exert a retarding effect on the paper carriage 4 on'which it is mounted.

nominational stop'15, it will spring rearwardly to normal position, and the parts are so arranged that almost simultaneously therewith the column stop'14 willcontact with the projected denominational stop. 5 ,Under the conditions assumed the-carriage will have acquired considerable momentum when the last mentioned contact occurs; despite the braking or retarding effect of the anti-rebound stop heretofore inentijoned '30 Consequently there will'be sometendency on the part of the carriage to rebound, but this rebound is instantly checked by the engagemerit of the end of the part 36 w-ith'the left j hand face of the projected denominational 5 stop 15,. said end, as clearly appearsin Fig.

2, being at the moment in its normal position andmearward of the front edge of the projected denominational stop. The result. is t the column stop is embracedcloselyby' As soon as the free end of-the stop portion 36 has passed the projected de the denominational stop and the anti-rebound stop, and the carriage is locked so that it cannot be moved a full letter space in either direction 'until the denominational stop is retracted.

It will be understood that whenever the column stops 14 are arranged on the rack bar- 13 sulliciently far apart to cause rebound of the carriage as it' passes rapidly or jumps from one to the other during the operation of the machine in tabulating work, an antirebound or locking stop 33 maybe arranged onthe rack bar 13 in association with each of the said stops in the manner indicated in Fig. 2, and rebound will thereby be obviated.

W hen the column stops are arranged upon the rack bar at comparatively short distances apart, the carriage in passing rapidly or jumping from one stop to the other does not acquire momentum sufficient to cause it to rebound to an appreciable extent and anti-rebound stops or locking catches need not be in connection with such closely arranged column stops.

arious changes of construction, besides those herembefore specified, and in the arrangement of the parts may be made without departing from the scope of my invention.

What 1 claim as new and desire to secure by Letters Patent, is 1. In a typewriting and tabulating mechanism, the combination of a carriage; a stop thereon; a stop on the frame of the machine; means for projecting one of said sto sinto the path of the other stop and for re easing the carriage; and a third stop independent of and unconnected with both of said first named stops and adapted to engage one of said first named stops to prevent rebound of said carriage.

2. In a typewriting and tabulating mechanism, the combination of a carriage; a stop thereon; a stop on the frame of the machine; means for projecting one of said sto )s into the path of the other stop and for re leasing the carriage; and an inde endently adjust-- able and separately movab le stop adapted to engage one of said first named stops to prevent rebound of the carriage.

3. In a type-writing and tabulating mechanism, the combination of a carriage; a rack "bar; a stop mounted on said rack bar and adjustable longitudinally thereof a second stop; means for projecting one of said steps into the path of the other and for releasing the carriage: and a third step mounted upon said rack bar and adjustable thereon independentl of said first named stop, said third stop being adapted to-engage one of the other stops to prevent rebound of the carriage.

4. In a type/writing and tabnlating mechanism, the combination of a carriage; a rack bar disposed longitudinally of said carriage; a column stop ad ustable along said rack bar;

an anti-rebound stop adjustable on said rack bar independently of said column stop; and another stop adapted to co-act, when the tabulating mechanismis' operated, with the said column stop in one direction and'with said anti-rebound stop in the opposite direction.

5. In a typewriting and tabulating mechanism, the combination of a carriage; a stop one of the co-acting stops will be embracedbetween the other and said third stop.

6. I11 a typewriting and tabulating mechanism, the combination of a "carriage; a stop thereon; a stop on the frame of the machine, one of said sto s being adapted to be projected to co-act. wlth the other when the carriage is released by the operation of the tabulating mechanism; and a separate anti rebound stop normally in the path ofthe projected stop, the construction being such t rat when the carriage is arrested by the co-action between the first named sto )8, one of the latter will be locked by and embraced between the other co-acting sto and the anti-rebound stop, one of the locking stops preventing motion of the locked stop in one direction and the other of the locking stops preventing motion in the opposite direction.

7. In a typewriting and tabulating mechanism, three cooperating stops, one of said stops being adapted to be projected into the path of the other two stops by the tabulating operation and being positioned when the carriage is arrested at the end of the tabnlating operation so that movement of the carriage less than aletter space in either direction will cause a contact between said projected stop and one of the other two stops, which two stops are adjustable independently of each other.

8. In a typewrit-ing and tabulating mechanism, the combination of acarriage; a r ck bar; a column stop adjustable thereon; an anti-rebound stop adjustable on said rack bar independently of said cohnnn'stop; and a third stop adapted to enter the space between sald column stop and said anti-rebound stop so that movement ol the carriage in either direction is prevented.

9. In a typewriting and tabulatiug mechanism," the combination of a carriage; a rack bar; a column stop adjustable thereon; an anti-rebound stop independently adjustable on said rack barmnd'disposed in advance of said column stop; and a third stop adapted to be projected into the path of the other two to be projected into the path of the first I named stops during the'tabulating operation,

-thereatter to coact With the column stop at- I normal position.

' anti-rebound stop having a spring arm and ing: movement and to prevent rebound ofsald carriage.

' machine, comprising a bifurcated or notched.

. turned to normal stop for the tabulating mechanism of a type- -Writing vmachine, compr sing a plate having bar and another tabulator stop on the frame.

tabulator stops, one on the carriage of the so as to co-act With the anti-rebound stop to' move part of it out of normal position and terthe anti-rebound stop' has returned to 11 In a typewriting and tab ulating mechanism, the combination of a carriage; a rack bar; a column stop ad ustable thereon; an

mounted on said rack bar independently of said column stopand in advance of the latter; and a third stop adapted to be projected into the path of the first named stops during the tabulating operation so as to co-act with the spring arm of the anti-rebound stop to move said arm from normal position and thereafter to co-act' with the column stop after the spring arm of the anti-rebound step has re osition.

' 12. A detachab e one-piece anti-rebound a biturcated or notched portion for engaging teeth on the opposite sides of a rack bar mounted to travel with the paper carriage and a lateral anti-rebound portion connected with the plate andadapted -to 0 0- operate with a tabulator stopon said rack 13. A detachable anti-rebound 'stopior the tabulating mechanism of a typewriting machine, comprising a bifurcated plate and a spring arm disposed laterally thereof and rigidly connectedtherewith, said antirebound stop being cooperative with two machine and the other on the machine frame, to stop the carriage at the end of a tabulat- 14. A detachable anti-rebound stop for theftabulating mechanism of a typewriting plate-like portion adapted to engage with the teeth at opposite sides of the columnstop rack-bar ofathe tabulating mechanism; 3

- plate-like portion by a rivet, said antiand a spring arm or detent attached to said l rebound stop being cooperative with two i tabulator stops, oneon the carriage of the machine and the other on the machine frame, to stop the carriage at the end of a tabulating movement and to prevent rebound of said carr1age.

15. In a typewriting and tabulating mecha1'1ism, t'he combination of a carriage; a rack bar; a column sto ad ustable thereon; an anti-rebound stop avmg a spring arm and -mounted on said rack bar independently. of

said column stop and in advance of the latter; and a third stop adapted to be projected into the path of the first named stops during the tabulating operation so as to co-act with the spring arm of the anti-rebound stop, thereby exerting a retarding effect on the carriage, and thereafter to co-act with said column stop.

16. :In a typewriting and tabulating mechanism, the combination of a carriage; an

anti-rebound stopja'djustable longitudinally] of said carriage and adapted to prevent re'- bound of said carriage When the latter is brought to a stop after it has been jumped or moved during the tabulating-operatlon, I said anti-rebound stop being provided with means for retarding the carriage as it nears i the end of its movement.

17. In a typewriting and tabulating mechanism, the-combination of a carriage; a col 7 umn stop adjustablp longitudinally thereof; an anti-rebound stop adjustable longitudi nally of said carriage independently of said column stop; and a third stop adaptedto be projected into the paths of the first named stops during a tabulating operation so as to.

move part of the anti-rebound stop from normal position and retard the carriage be tore co-acting With said column stop.

18.- In a typeWriting-and tabulating mech anism, the combination ofa carriage; a rack;

bar thereon; a column stop adjustable along said rack bar; an anti-rebound stop separate from said column stop and als'oadjnstable I along said rack bar, said anti-rebound stop.

having a spring arm; a third stop adapted to Y be projected into the paths of the other two stops so that in thetabulating operation of the machine said projected stop first bends or flexes the spring arm of said anti-rebound stop, then disengages from the latter permittmg said spring arm to return to normal position, and thereafter contacts with'said column stop. I

19. In a typewriting and ta'bulating mechanism, the combination of a carriage; escapev ment mechanism therefor; a rack baron said carriage; a column stop adjustable alongsaidrack bar; an anti-rebound stop separately adjustable along said'rack'bar and having a spring arm; a series of denominational stops; means tor pro ecting any one of said denominationai stops into the paths of the anti-rebound and column stops and for freeing the carriage from said escapement mechanism, the construction and arrangement being such that the projected denominational stop contacts with the spring armof the antlthe carriage, rebound of the latter being pre- I rebound stop, bending or flexing said arm, left-hand faceof the projected dcnomina- 10 said denominational stop then releasing said tional stop.

spring arm permitting it to return to normal Signed at Minneapolis, in the county of position, and thereafter said denominational Hennepin, and State of Minnesota this 26th stop oo-aets with said column stop to arrest day of April A. D. 1905.

WILLIAM VICTOR PETERSON. vented by the end of the spring arm of said Witnesses: anti-rebound stop which is then in normal F. E. OHIDESTER, position and is adapted to engage with the CHAs. A. GRIFFIN. 

